Map of flight path and driving directions from Casper to Portsmouth.
Shortest flight path between Casper–Natrona County International Airport (CPR) and Portsmouth International Airport at Pease (PSM).
How far is Portsmouth from Casper?
There are several ways to calculate distances between Casper and Portsmouth. Here are two common methods:Vincenty's formula (applied above)
- 1792.264 miles
- 2884.369 kilometers
- 1557.435 nautical miles
Vincenty's formula calculates the distance between latitude/longitude points on the earth’s surface, using an ellipsoidal model of the earth.Haversine formula
- 1787.473 miles
- 2876.659 kilometers
- 1553.272 nautical miles
The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance – the shortest distance between two points).
|A||Casper–Natrona County International Airport|
|B||Portsmouth International Airport at Pease|
Time difference and current local times
The time difference between Casper and Portsmouth is 2 hours. Portsmouth is 2 hours ahead of Casper.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 199 kg (440 pounds).
Frequent Flyer Miles Calculator
Casper (CPR) → Portsmouth (PSM).